Cluster achitecture

Hi @matthewb ,Thank you for your feedback and answers.

So in the last case, I understand that using 2 separate cluster structures, 3 nodes on dc 1 and 3 nodes on dc2, will solve my problem. If I am wrong, please correct me. I understand that I need to use group replication in this architecture. I made a small architecture drawing, I would like you to guide me again on this issue.